Are there any groups or meetups in the Louisville area? 

If you aren’t already I would suggest joining some of the local RE groups in NWI...great connections and info can come from those meetings.

If you’re not already I would suggest joining some FB groups specific to the NWI RE market as you will find many investors and realtors to connect with.

Older buyers over the age of 51 years old were the only group that sought out an agent first. 

You could think about how much capital these investment partners should have to contribute and what their end goals are with the investment(s).How you meet these investment partners is up to you, and can largely be done through groups and other events that draw financially minded people to them.

You could check out Slatehouse Group Property Management.

https://www.mashcole.com/You might be able to find a better group that is smaller but it will take you a ton of time and energy to do so. 

Find a local real estate investor group.

When you get to your meet-ups, go with the intention of adding value to others in the group, at least the ones you’d like to emulate.

Metrolina, as Don posted about, is a great group.